/*
 * Copyright 2009 XueSong Guo.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.webwheel.database.types;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * type for {@link java.sql.PreparedStatement#setAsciiStream(int, java.io.InputStream, int)} and {@link java.sql.ResultSet#getAsciiStream(int)}
 */
public class AsciiStream extends ByteArrayInputStream {

    public static AsciiStream valueOf(InputStream is) throws IOException {
        if(is==null) return null;
        return new AsciiStream(is);
    }

    public AsciiStream(InputStream is) throws IOException {
        super(new byte[0]);
        ByteArrayOutputStream baos;
        try {
            baos = new ByteArrayOutputStream(is.available());
        } catch (IOException e) {
            baos = new ByteArrayOutputStream();
        }
        byte[] buf = new byte[1024];
        int rd;
        while ((rd = is.read(buf)) != -1) {
            baos.write(buf, 0, rd);
        }
        is.close();
        this.buf = baos.toByteArray();
        this.count = this.buf.length;
    }
}
